/Engine/Source/Runtime/Core/Public/Containers/Map.h
Creates a const iterator over the values associated with a specified key in a map
[TConstKeyIterator](API\Runtime\Core\Containers\TMapBase\TConstKeyIterator) CreateConstKeyIterator ( typename [TConstKeyIterator::KeyArgumentType](API\Runtime\Core\Containers\TMapBase\TConstKeyIterator\KeyArgumentType) InKey ) const